Adds http-vuln-cve2015-1635 to detect Microsoft Windows systems vulnerable to MS15-034

scripts/http-vuln-cve2015-1635.nse

@@ -0,0 +1,85 @@
+local shortport = require "shortport"
+local http = require "http"
+local stdnse = require "stdnse"
+local string = require "string"
+local vulns = require "vulns"
+
+description = [[
+Checks for a remote code execution vulnerability (MS15-034) in Microsoft Windows systems (CVE2015-2015-1635).
+
+The script sends a specially crafted HTTP request with no impact on the system to detect this vulnerability. 
+The affected versions are Windows 7, Windows Server 2008 R2, Windows 8, Windows Server 2012, Windows 8.1, 
+and Windows Server 2012 R2.
+
+References:
+* https://technet.microsoft.com/library/security/MS15-034
+]]
+
+---
+-- @usage nmap -sV --script vuln <target>
+-- @usage nmap -p80 --script http-vuln-cve2015-1635.nse <target>
+-- @usage nmap -sV --script http-vuln-cve2015-1635 --script-args uri='/anotheruri/' <target>
+-- @output
+-- PORT   STATE SERVICE REASON
+-- 80/tcp open  http    syn-ack
+-- | http-vuln-cve2015-1635: 
+-- |   VULNERABLE:
+-- |   Remote Code Execution in HTTP.sys (MS15-034)
+-- |     State: VULNERABLE (Exploitable)
+-- |     IDs:  CVE:CVE-2015-1635
+-- |       A remote code execution vulnerability exists in the HTTP protocol stack (HTTP.sys) that is 
+-- |       caused when HTTP.sys improperly parses specially crafted HTTP requests. An attacker who 
+-- |       successfully exploited this vulnerability could execute arbitrary code in the context of the System account.
+-- |           
+-- |     Disclosure date: 2015-04-14
+-- |     References:
+-- |       https://technet.microsoft.com/en-us/library/security/ms15-034.aspx
+-- |_      http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1635
+-- @args http-vuln-cve2015-1635.uri URI to use in request. Default: /
+---
+
+author = {"Kl0nEz", "Paulino <calderon()websec.mx>"}
+license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
+categories = {"vuln", "safe"}
+
+portrule = shortport.http
+
+local VULNERABLE = "Requested Range Not Satisfiable"
+local PATCHED = "The request has an invalid header name"
+
+action = function(host, port)
+  local uri = stdnse.get_script_args(SCRIPT_NAME..".uri") or "/"
+  local vuln_report = vulns.Report:new(SCRIPT_NAME, host, port)
+  local vuln = {
+    title = 'Remote Code Execution in HTTP.sys (MS15-034)',
+    state = vulns.STATE.NOT_VULN, 
+    description = [[
+A remote code execution vulnerability exists in the HTTP protocol stack (HTTP.sys) that is 
+caused when HTTP.sys improperly parses specially crafted HTTP requests. An attacker who 
+successfully exploited this vulnerability could execute arbitrary code in the context of the System account.
+    ]],
+    IDS = {CVE = 'CVE-2015-1635'},
+    references = {
+      'https://technet.microsoft.com/en-us/library/security/ms15-034.aspx'
+    },
+    dates = {
+      disclosure = {year = '2015', month = '04', day = '14'},
+    }
+  }
+  local options = {header={}}
+  options['header']['Host'] = stdnse.generate_random_string(8)
+  options['header']['Range'] = "bytes=0-18446744073709551615"
+
+  local response = http.get(host, port, uri, options)
+  if response.status and response.body then
+    if response.status == 416 and string.find(response.body, VULNERABLE) ~= nil
+    and string.find(response.header["server"], "Microsoft") ~= nil then
+      vuln.state = vulns.STATE.VULN
+    end
+    if response.body and string.find(response.body, PATCHED) ~= nil then
+      stdnse.debug2("System is patched!")
+      vuln.state = vulns.STATE.NOT_VULN
+    end
+  end
+  return vuln_report:make_output(vuln)
+end